Thanks Adam.
Currently i face another problem.
I have implement the editor on our application, we need to input in thai language.
I configure the editor -- editor.UseHTMLEntities = false
Have also include in the below meta tag for thai language:
<meta http-equiv="Content-Language" content="th">
<meta http-equiv="Content-Type" content="text/html; charset=windows-874">
<meta http-equiv="Content-Type" content="text/html; charset=tis-620">
The first image below shows the text that i copied and paste Word document, but after it's saved to database, the text appearing in the text editor is not the same as what is copied in initially (please refer to the 2nd image)
1st Image --> Before saving
2nd Image --> After saving